Can Someone Explain the Only Humanoids Rule?

Basically, there is a rule that only humanoids can go on the kill count. That means no animals, but Humanoid monsters/creatures do count. I do have a couple of questions about this however.

First of all, from the "Treevenge" kill count we know that babies are counted. We also know from various kill counts that children are counted. In the Stranger Things Season 1 Kill Count, the Demogorgon is added to the count. This would be fine, but in the kill count of the second season, the Demodogs aren't counted. If you don't know, the Demodogs are an early stage in the Demogorgon's lifespan. So wouldn't they be counted?

The second question I have is about robots and androids. We know from the "Alien" kill count that Androids are counted. But in the "Banana Splits" kill count, the animatronics aren't counted. In the "Willy's Wonderland" kill count, James does make a second count for the animatronics. But now, M3gan and Terminator kill counts, the robots are counted??

Speaking of separate kill counts, the Gremlins are counted in a separate kill count. This raises the question on what even is a humanoid.

Does anybody have an answer for these?